Tasmanian Shelf Sediment Composition and Geochemistry

Three hundred and sixty-five seabed samples characterize surface sediments across the Tasmanian continental shelf and Bass Strait. The dataset, provided by the Australian Ocean Data Network, details lithofacies variations, heavy mineral suites, and geochemical analyses like tin and phosphorus content. It was last updated in April 2026.

Use Cases

• Classify sediment lithofacies (e.g., quartz-rich sands, muddy sediments, bryozoan gravels) based on sample location and composition.
• Analyze heavy mineral suites to infer sediment provenance and transport pathways from the adjacent hinterland.
• Map geochemical anomalies, such as cassiterite grains or phosphate content, to identify mineral resource potential offshore tin-producing areas.
• Model modern versus relict sediment distribution by correlating sediment type with sample location on the inner, middle, and outer shelf.

Strengths

• Dataset is based on 365 surface and near-surface seabed samples.
• Geochemical analyses include specific recorded values like a maximum of 10 ppm Sn and 3.6 percent P.

Limitations

• Sample station density is noted as low in parts of the shelf, limiting spatial resolution.
• The data is primarily descriptive from a scientific assessment; raw sample-level data or columnar structure is not specified.
• File formats are PDF and HTML, which may require extraction to be used for computational analysis.

Provenance

Source

Australian Ocean Data Network

Collection Method

Analysis of seabed samples collected from the continental shelf.

Time Range

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Freshness

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Geography

Tasmanian continental shelf and parts of Bass Strait.